Video zero-watermarking algorithm based on pseudo-3D DCT domain
Huang An · Journal of Sichuan University · 2014
Zero-watermarking has its own advantages for video.A video zero-watermarking algorithm based on chaotic map and pseudo-3Ddiscrete cosine transform(DCT)is proposed.Firstly,the pseudo-3DDCT is performed on the original video frames,which are selected to construct zero-watermarking. Secondly,combining with chaotic map,zero-watermarking is generated by the sign sequence of pseudo-3DDCT coefficients.Then,the zero-watermarking is registered in third party database.There is no modification for the original video,so,the proposed scheme has good invisibility.Experimental results show that it is robust against several attacks,such as H.264compression and MPEG-4compression, noisy attack,filtering,and frame shear.